A TSOP1738 is an IR receiver sensor that is used to receive an output signal from the IR based remote like a TV remote, AC remote, etc. It works on a frequency of 38Khz. It includes a photodetector and preamplifier inside it. It is a low power device that is highly immune to ambient light. When you press any button on an IR remote, the IR remote sends a signal associated with that button at 38KHZ. That is then received by the photodetector inside the sensor and the pre-amplified using a preamplifier. The pre-amplified signal can be further used by the microcontroller to decode the received data from the sensor.
Features
- Photo detector and preamplifier in one package
- Internal filter for PCM frequency
- Improved shielding against electrical field disturbance
- TTL and CMOS compatibility
- Output active low
- Low power consumption
- High immunity against ambient light
- Continuous data transmission possible (up to 2400 bps)
- Suitable burst length ≥10 cycles/burst
Absolute Maximum Ratings :
Basic Characteristics :
Application Circuit :
TSOP-1738 Applications
- Receive IR signals
- Decode Remote signals
- Analyse, re-create or duplicate remote Signals
- Wireless control applications
- Receiver circuit for IR remote controls
- IR Remote tester circuits
